CN1321913A - Colour liquid crystal display device - Google Patents
Colour liquid crystal display device Download PDFInfo
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- CN1321913A CN1321913A CN 00107148 CN00107148A CN1321913A CN 1321913 A CN1321913 A CN 1321913A CN 00107148 CN00107148 CN 00107148 CN 00107148 A CN00107148 A CN 00107148A CN 1321913 A CN1321913 A CN 1321913A
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Abstract
The colour liquid crystal display device is characterized by that it is comprised of two liquid crystal display screens of A and B, and utilizes their combined action to implement full-colour display. The liquid crystal screen A is a two-colour liquid crystal screen consisting of two neutral polaroids and liquid crystal box with two kinds of subpixel, and the liquid crystal screen B is a two-colour liquid crystal colour gate consisting of one two-colour polaroid and liquid crystal box which is divided into several small liquid crystal boxes. Said invention colour liquid crystal display device possesses the advantages of high resolution, good contrast, high brightness and low cost.
Description
The invention relates to the improvement of film transistor type colour LCD device (TFT-LCD).
Liquid crystal display device (LCD) development is rapid, and purposes is increasingly extensive, and it has become most important flat-panel display device.The characteristics of liquid crystal display device are that power consumption is little, and operating voltage is low, and are very thin, in light weight, reliable and the life-span is long.On the white-black pattern basis, adopt white backlight source and the red, green, blue color filter film (CF) formed by red, green, blue can realize colored the demonstration.Employing has the active matrix chromatic liquid crystal screen (TFT matrix chromatic liquid crystal screen) of CF and increases the matrix structure fineness, can obtain high-contrast and high-resolution coloured image and show.Owing to adopt red, green, blue CF and TFT, make the manufacture process of TFT matrix chromatic liquid crystal screen become very complicated, so yield rate be low, the cost height.In addition, further improve resolution and also be subjected to considerable restraint.
For overcoming the above problems, the present inventor proposes to adopt two liquid crystal display A and B to constitute the method that colour LCD device carries out panchromatic demonstration in patent of invention " colour LCD device and manufacture method thereof " (application number 98118791.9), liquid crystal display A is double-colored LCDs, liquid crystal display B is double-colored LCCS (liquid crystal color shutter), thereby make TFT colour LCD device manufacture process become simple, yield rate improves, and cost reduces, and can improve resolution.But double-colored LCCS structure more complicated, and CF selects yellow and blue in double-colored LCDs, the colour purity susceptible to, brightness also need improve in addition.The present invention adopts following method: (1) double-colored LCDs is by two neutral polaroids and have the liquid crystal cell of two class sub-pixels such as green, magenta to constitute, (2) double-colored LCCS is made of double-colored polaroid of a slice (being also referred to as dichroic polarizer sometimes) and liquid crystal cell, and be divided into N little liquid crystal cell, thereby can realize simplifying the LCCS structure, improve colour purity and improve the purpose of brightness.
Be elaborated below.
In order to obtain Color Liquid Crystal Display, colour LCD device generally adopts the CF mode at present, promptly adopt the white backlight source irradiating liquid crystal box of forming by red, green, blue, a large amount of liquid crystal cells are arranged on liquid crystal cell, a CF is all arranged on each liquid crystal cells, red, green, blue CF and liquid crystal cells constitute the red, green, blue sub-pixel respectively, and three sub-pixels of red, green, blue constitute a pixel, liquid crystal cells improvement lock on-off action.For improving picture contrast and increasing response speed, generally adopt the TFT colour LCD device, a TFT is promptly all arranged on each liquid crystal cells.The display screen structure of TFT colour LCD device is as follows: earlier at the column electrode and the row electrode of a formation mutual insulating on glass, adopt thin film technique and photoetching technique to make TFT again on its intersection point.TFT grid, source electrode and drain electrode go between respectively, are connected to column electrode, row electrode and display unit.At another piece total public electrode of all display units that forms on glass, corresponding with following display unit, be manufactured with red, green, blue three class CF, liquid crystal material embeds between two blocks of glass, constitute liquid crystal cell, the neutral polaroid of a slice is respectively arranged at two glass outer sides.Liquid crystal cell is a half-wave ratarder, and when it was in " off " attitude, liquid crystal presented birefringence effect, and it plays half-wave retardation, makes incident polarized light half-twist during outgoing from liquid crystal cell.When liquid crystal cell was in " on " attitude, liquid crystal did not present birefringence effect, and incident polarized light is by liquid crystal cell and unaffected.The make-and-break time difference can make incident polarized light pass through or end by the duty that changes liquid crystal cell, if then can change monochromatic luminous intensity.By the effect of red, green, blue three class CF, just can carry out colour and show.Because first glass complex manufacturing process need to form a large amount of meticulous TFT on it, so the yield rate of TFT matrix chromatic liquid crystal screen is low, and descended rapidly along with the increase of pixel.To further improve the liquid crystal display resolution of this structure, more difficulty.
For overcoming the above problems, the present inventor proposes to adopt two liquid crystal display A and B to constitute the method that colour LCD device carries out panchromatic demonstration in patent of invention " colour LCD device and manufacture method thereof " (application number 98118791.9), liquid crystal display A is double-colored LCDs, liquid crystal display B is double-colored LCCS, thereby make TFT colour LCD device manufacture process become simple, therefore yield rate improves, and cost reduces, and can improve resolution.But owing to adopt yellow and blue two class sub-pixels in the double-colored LCDs, promptly have the two class liquid crystal cells of Huang, blue CF and TFT respectively, three kinds of color images of red, green, blue all need to adopt the time sequencing mode to show, so brightness is lower.Red in addition, the green emitted spectrum intervals is nearer, red, the green mixed light by the Yellow filter film when double-colored liquid crystal color shutter color separation, the colour purity susceptible to.Double-colored in addition LCCS is made of point-like with TFT or strip liquid crystal cells, complex structure, and cost is higher.
In order to simplify the LCCS structure, improve colour purity and to improve brightness, the present inventor takes following method: (1) liquid crystal display A is by two neutral polaroids and have liquid crystal cells green, magenta two class sub-pixels to constitute, (2) liquid crystal display B is made of a slice Huang-blue or green double-colored polaroid and liquid crystal cell, and liquid crystal cell is divided into N little liquid crystal cell.Therefore liquid crystal display B structure becomes simple.Owing to adopt Huang-blue or green double-colored LCCS, green glow can be independently, be late for a sequential system break-make, and green image brightness significantly improves, and coloured image brightness also is improved.Owing to adopt green, magenta CF, red, the blue emission spectrum intervals is far away, red, the blue mixed light by magenta CF is when double-colored LCCS color separation, and colour purity is better.For example respectively there is the neutral polaroid of a slice in liquid crystal cell two outsides of liquid crystal display A in Fig. 1, and its absorption axes is horizontal direction.Double-colored polaroid is that Huang-green grass or young crops is double-colored among the liquid crystal display B, yellow polarization axle vertically, blue or green polarization axle along continuous straight runs.When liquid crystal cells corresponding with green CF among the liquid crystal display A is in " on " attitude and is in " off " attitude with the corresponding liquid crystal cells of magenta CF, no matter which kind of state liquid crystal display B is in, the white light that backlight sends becomes green glow after passing through liquid crystal display A and liquid crystal display B.When liquid crystal cells corresponding among the liquid crystal display A with magenta CF be in " on " attitude, when being in " off " attitude with the corresponding liquid crystal cells of green CF, the white light that backlight sends is by behind the liquid crystal display A, become magenta light, magenta light is by liquid crystal display B the time, according to liquid crystal display B state, become ruddiness or blue light.By liquid crystal display A and liquid crystal display B acting in conjunction, double-colored demonstration can be transformed into panchromatic demonstration like this.
Huang-blue or green double-colored polaroid can replace with red-blue or green double-colored polaroid among the liquid crystal display B.CF also can adopt Huang, blueness in the liquid crystal cell of liquid crystal display A, and double-colored polaroid then adopts red-cyan among the liquid crystal display B.CF also can adopt red, cyan in the liquid crystal cell of liquid crystal display A, and double-colored polaroid then adopts Huang-blueness among the liquid crystal display B.
In order to improve brightness, shorten the frame period, whole transparency electrode on the liquid crystal cell among the liquid crystal display B can be divided into many groups strip shaped electric poles parallel with horizontal scan electrode, be about to liquid crystal cell and be divided into many little liquid crystal cells, each little liquid crystal cell can both drive, generally liquid crystal cell is divided into 20-100 little liquid crystal cell, preferably is divided into 40-60 little liquid crystal cell.Because π type liquid crystal cell has response speed faster, liquid crystal cell can adopt π type liquid crystal cell.
A pixel is made of three sub-pixels of red, green, blue in existing colour LCD device, and a pixel only is made of two sub-pixels in colour LCD device of the present invention, compare with existing colour LCD device, resolution can significantly improve.And under the constant situation of resolution, because the decreased number 1/3rd of sub-pixel, thereby can significantly improve yields, reduce cost.Colour LCD device brightness of the present invention is higher, and has contrast preferably.
In a word, colour LCD device of the present invention is made of two liquid crystal display A and B, liquid crystal display A is double-colored LCDs, it is by two neutral polaroids and have the liquid crystal cell of two class sub-pixels to constitute, liquid crystal display B is double-colored liquid crystal color shutter, and it is made of double-colored polaroid of a slice and liquid crystal cell, and its liquid crystal cell is divided into many little liquid crystal cells, each little liquid crystal cell can both drive, and liquid crystal cell can adopt π type liquid crystal cell.Colour LCD device is divided into four kinds:
(1) liquid crystal display A is by two neutral polaroids and have liquid crystal cells green, magenta two class sub-pixels to be constituted, and liquid crystal display B is by a slice Huang-blue or green double-colored polaroid and liquid crystal cell formation.
(2) liquid crystal display A is by two neutral polaroids and have liquid crystal cells green, magenta two class sub-pixels to be constituted, liquid crystal display B by a slice red-blue or green double-colored polaroid and liquid crystal cell formation.
(3) liquid crystal display A is by two neutral polaroids and have the liquid crystal cell of Huang, blue two class sub-pixels to constitute, liquid crystal display B by a slice red-blue or green double-colored polaroid and liquid crystal cell constitute.
(4) liquid crystal display A is by two neutral polaroids and have liquid crystal cells red, cyan two class sub-pixels to constitute, and liquid crystal display B is made of a slice Huang-blue double-colored polaroid and liquid crystal cell.
Fig. 1 and Fig. 2 are the structural drawing of colour LCD device of the present invention.A and B represent liquid crystal display A and liquid crystal display B respectively, and L represents backlight.1A, 8A, 6B represent polaroid, and 2A, 7A, 1B and 5B represent glass substrate, and 3A-1,3A-2 represent liquid crystal cells (pixel electrode), 4A and 3B represent liquid crystal layer, 5A, 2B and 4B represent transparency electrode, and 6A represents filter coating, and CF-1 and CF-2 represent color filter film.Vertical, the horizontal polarization direction of principal axis of Far Left diagrammatic representation polaroid 1A, 8A, 6B among each figure, it is red, yellow, blue or green and white that R, Y (RG), C (GB), W (RGB) represent respectively, the absorption axes of the neutral polaroid of 0 expression.
Specify with example below.
Example 1
Fig. 1 is a colour LCD device structural drawing of the present invention.It is made up of green-pinkish red double-colored LCDs A and Huang-blue or green double-colored liquid crystal color shutter B, and L is a backlight, and A is made of two neutral polaroid 1A, 8A and liquid crystal cell C1.The C1 essential structure is as follows: be liquid crystal layer 4A between glass substrate 2A and glass substrate 7A, on glass substrate 2A inside surface, form point-like liquid crystal cells 3A-1 and the 3A-2 that two classes have the TFT structure, form filter coating 6A at substrate 7A inside surface, it is divided into green filter film CF-1 and magenta filter coating CF-2, they are corresponding with 3A-1 and 3A-2 respectively, are common transparent electrode 5A on it.Neutral polaroid 1A (W-0), 8A (W-0) are attached to respectively on substrate 2A and the 7A outside surface.B is made of Huang-blue or green double-colored polaroid 6B (Y-C) and π type liquid crystal cell C2.The C2 essential structure is as follows: be liquid crystal layer 3B between glass substrate 1B and glass substrate 5B, form transparency electrode bar 2B, the 4B of 50 groups of correspondences at glass substrate 1B, 5B inside surface along horizontal direction, C2 is made up of 50 little π type liquid crystal cell C2-n (n=1-50) like this.Huang-blue or green double-colored polaroid 6B (Y-C) is attached on the glass substrate 5B outside surface, and the polarization axis direction of polaroid as shown in FIG..
When liquid crystal cells 3A-1 corresponding with CF-1 among the liquid crystal cell C1 was in " on " attitude, no matter which kind of state liquid crystal cell C2-n was in, and the white light that backlight L sends becomes green glow after passing through A, B and CF-1.Can change the brightness of green sub-pixels the switching time by control liquid crystal cells 3A-1, forms green image.When liquid crystal cells 3A-2 corresponding with CF-2 among the liquid crystal cell C1 and liquid crystal cell C2-n are in " on " attitude, the white light that L sends by A, B and CF-2 after, become ruddiness.Can change the brightness of red sub-pixel the switching time by control liquid crystal cells 3A-2, forms red image.When liquid crystal cells 3A-2 corresponding among the liquid crystal cell C1 with CF-2 be in " on " attitude, when liquid crystal cell C2-n is in " off " attitude, the white light that L sends becomes blue light by behind A, B and the CF-2.Can change the brightness of blue subpixels the switching time by control liquid crystal cells 3A-2, forms blue image.Therefore can carry out panchromatic demonstration by the acting in conjunction of green-pinkish red double-colored LCDs A and Huang-blue or green double-colored liquid crystal color shutter B.
Example 2
Fig. 2 is a colour LCD device structural drawing of the present invention.It is made up of green-pinkish red double-colored LCDs A and red-blue or green double-colored liquid crystal color shutter B, and L is a backlight, and B is made of red-blue or green double-colored polaroid 6B (R-C) and π type liquid crystal cell C2, the polarization axis direction of polaroid as shown in FIG., all the other are with example 1.
When liquid crystal cells 3A-1 corresponding with CF-1 among the liquid crystal cell C1 and liquid crystal cell C2-n are in " on " attitude, the white light that backlight L sends by A, B and CF-1 after, become green glow.Can change the brightness of green sub-pixels the switching time by control liquid crystal cells 3A-1, forms green image.When liquid crystal cells 3A-2 corresponding with CF-2 among the liquid crystal cell C1 is in " on " attitude and liquid crystal cell C2-n when being in " off " attitude, the white light that L sends by A, B and CF-2 after, become blue light.Can change the brightness of blue subpixels the switching time by control liquid crystal cells 3A-2, forms blue image.When liquid crystal cells 3A-2 corresponding with CF-2 among the liquid crystal cell C1 and liquid crystal cell C2-n are in " on " state, the white light that L sends by A, B and CF-2 after, become ruddiness.Can change the brightness of red sub-pixel the switching time by control liquid crystal cells 3A-2, forms red image.Therefore can carry out panchromatic demonstration by the acting in conjunction of green-pinkish red double-colored LCDs A and red-blue or green double-colored liquid crystal color shutter B.
Example 3
Colour LCD device is made up of Huang-blue double-colored LCDs A and red-blue or green double-colored liquid crystal color shutter B in Fig. 2, and L is a backlight, and CF-1, CF-2 represent Huang, blue filter coating respectively, and all the other are with example 2.
When liquid crystal cells 3A-1 corresponding with CF-1 among the liquid crystal cell C1 and liquid crystal cell C2-n are in " on " attitude, the white light that backlight L sends by A, B and CF-1 after, become ruddiness.Can change the brightness of red sub-pixel the switching time by control liquid crystal cells 3A-1, forms red image.When liquid crystal cells 3A-1 corresponding with CF-1 among the liquid crystal cell C1 is in " on " attitude and liquid crystal cell C2-n when being in " off " attitude, the white light that L sends by A, B and CF-1 after, become green glow.Can change the brightness of green sub-pixels the switching time by control liquid crystal cells 3A-1, forms green image.When liquid crystal cells 3A-2 corresponding among the liquid crystal cell C1 with CF-2 be in " on " attitude, when liquid crystal cell C2-n is in " off " attitude, the white light that L sends becomes blue light by behind A, B and the CF-2.Can change the brightness of blue subpixels the switching time by control liquid crystal cells 3A-2, forms blue image.Therefore can carry out panchromatic demonstration by Huang-blue double-colored LCDs A and red-blue or green double-colored liquid crystal color shutter B acting in conjunction.
Claims (6)
1. colour LCD device, it is characterized in that it is made of two liquid crystal display A and B, liquid crystal display A is double-colored LCDs, and it is by two neutral polaroids and have the liquid crystal cell of two class sub-pixels to constitute, liquid crystal display B is double-colored liquid crystal color shutter, and it is made of double-colored polaroid of a slice and liquid crystal cell.
2. according to the colour LCD device of claim 1, it is characterized in that liquid crystal display A by two neutral polaroids with there are liquid crystal cells green, magenta two class sub-pixels to constitute, liquid crystal display B is made of a slice Huang-blue or green double-colored polaroid and liquid crystal cell.
3. according to the colour LCD device of claim 1, it is characterized in that liquid crystal display A by two neutral polaroids with there are liquid crystal cells green, magenta two class sub-pixels to constitute, liquid crystal display B by a slice red-blue or green double-colored polaroid and liquid crystal cell constitute.
4. according to the colour LCD device of claim 1, it is characterized in that liquid crystal display A by two neutral polaroids with there is the liquid crystal cell of Huang, blue two class sub-pixels to constitute, liquid crystal display B by a slice red-blue or green double-colored polaroid and liquid crystal cell constitute.
5. according to the colour LCD device of claim 1, it is characterized in that liquid crystal display A by two neutral polaroids with there are liquid crystal cells red, cyan two class sub-pixels to constitute, liquid crystal display B is made of a slice Huang-blue double-colored polaroid and liquid crystal cell.
6. according to claim 2,3,4 and 5 colour LCD device, it is characterized in that the liquid crystal cell of liquid crystal display B is divided into many little liquid crystal cells, each little liquid crystal cell can both drive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00107148 CN1321913A (en) | 2000-05-02 | 2000-05-02 | Colour liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00107148 CN1321913A (en) | 2000-05-02 | 2000-05-02 | Colour liquid crystal display device |
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| CN1321913A true CN1321913A (en) | 2001-11-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279529A (en) * | 2018-01-19 | 2018-07-13 | 精电(河源)显示技术有限公司 | A kind of TFT liquid crystal displays with anti-inverted image layer |
| CN108399963A (en) * | 2018-01-19 | 2018-08-14 | 精电(河源)显示技术有限公司 | A kind of manufacture craft of high transmittance conductive film and its manufactured liquid crystal display |
| WO2023131703A1 (en) | 2022-01-10 | 2023-07-13 | Infinitesea Gmbh | Installation for breeding aquatic organisms, salt composition, and saltwater or brackish water for such an installation |
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2000
- 2000-05-02 CN CN 00107148 patent/CN1321913A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279529A (en) * | 2018-01-19 | 2018-07-13 | 精电(河源)显示技术有限公司 | A kind of TFT liquid crystal displays with anti-inverted image layer |
| CN108399963A (en) * | 2018-01-19 | 2018-08-14 | 精电(河源)显示技术有限公司 | A kind of manufacture craft of high transmittance conductive film and its manufactured liquid crystal display |
| CN108279529B (en) * | 2018-01-19 | 2019-12-10 | 精电(河源)显示技术有限公司 | TFT liquid crystal display with prevent falling shadow layer |
| WO2023131703A1 (en) | 2022-01-10 | 2023-07-13 | Infinitesea Gmbh | Installation for breeding aquatic organisms, salt composition, and saltwater or brackish water for such an installation |
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